Prepared by
IronsideFarrar On behalf of
Tiree Onshore Scenario Mapping Steering Group
Tiree Onshore Scenario Mapping
Final Report
i
Contents
Tiree Onshore Scenario Mapping Study
Contents
1.0 INTRODUCTION 1
1.1 Background 1
1.2 Consultant’s Brief 2
1.3 Scope of Work / Approach 3
1.4 Consultation 5
2.0 TIREE: CONTEXT 7
2.1 Tiree - Place 7
2.2 Community 10
2.3 Policy Context 11
3.0 CONSULTATIONS 13
3.1 Communications Strategy 13
4.0 OPERATIONS AND MAINTENANCE SCENARIOS & ANALYSIS 23
4.1 Scottish Power Renewables O&M Scenarios 23
4.2 Scenario Planning / Tools / Assumptions 24
4.3 Scenario Description, Mapping & Analysis 25
5.0 COMPARATIVE ASSESSMENT 27
Scenario 1 27
Scenario 2 33
Scenario 3 37
Scenario 4 43
6.0 OBJECTIVE LED ANALYSIS 49
6.1 Development of Objectives 49
6.2 Identifying Opportunity for Mitigation 49
6.3 Summary of Objective Led Analysis 50
7.0 MITIGATION AND MONITORING 53
7.1 Developing Mitigation and Monitoring Measures 53
7.2 Structuring Community Benefits 53
7.3 Building Community Capacity, Skills Development & Training 53
7.4 Consenting Requirements 54
7.5 Licence & Planning Conditions & S75 Agreements 55
7.6 Future Change / Project Uncertainties 55
8.0 FUTURE STEPS 61
APPENDICES
Appendix 1 Socio-Economic Assessment
Appendix 2 Environmental Baseline Information
Appendix 3 Scenario Profiles and Assumptions
Appendix 4 Assessment Matrix & Methodology
Appendix 5 Planning Baseline & LDP
Appendix 6 Communication Strategy
Appendix 7 Consultation Boards Events 1-3
Appendix 8 Consultation Event Comment Summaries
Appendix 9 The Brief
ii IronsideFarrar
1
Section 1 Introduction
Tiree Onshore Scenario Mapping Study
1.1 Background
The Scottish Government has set a range of challenging targets for energy and climate change. These
recognise the potential to take advantage of the extensive marine energy resources (wind, wave and tidal
power) available in Scottish waters with the following aims:
renewable sources to generate the equivalent of 100 per cent of Scotland's gross annual electricity
consumption by 2020, with an interim milestone of 31 per cent by 2011.
renewables sources to provide the equivalent of 11 per cent of Scotland's heat demand by 2020.
To assist in meeting these targets, a Sectoral Marine Plan for Offshore Wind Energy in Scottish Territorial
Waters (Blue Seas - Green Energy) sets out the Government's vision for developing offshore wind energy
up to 2020 and beyond.
Currently, up to 10 GW of planned development is in progress divided roughly equally between Round 3
sites and sites in Scottish Territorial Waters (STW). The Crown Estate has granted exclusive rights to
ScottishPower Renewables (SPR) to take forward the development of the Argyll Array (180-300 turbines)
offering a potential generation capacity of 1800 Mega Watts (MW). SPR will be submitting a Section 36
Consent Application to Scottish Ministers accompanied by a detailed Environmental Statement and an
application for a Marine Licence under Section 16 of the Marine (Scotland) Act 2010.
This study seeks to better understand the potential Operational and Maintenance (O&M) implications
associated with the proposed development of an offshore windfarm off the coast of Tiree. The study has
sought to capture views of stakeholders on the potential issues associated with Operations and
Maintenance support related to the proposed Argyll Array.
Introduction
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1.2 Consultant’s Brief
Argyll and Bute Council together with the Scottish Government, Marine Scotland, Highlands and Islands
Enterprise and the Crown Estate commissioned Ironside Farrar to develop a clearer understanding of the
potential Operational and Maintenance implications of any future offshore array off Tiree. The work has
been progressed through a Steering Group chaired by Argyll and Bute Council comprising the project
partners together with Tiree Community Development Trust, Caledonian Maritime Assets Limited, Scottish
Natural Heritage, NHS Highland and the North of Scotland Public Health Network, and ScottishPower
Renewables.
Operational and Maintenance needs (O&M) for offshore windfarms typically include a level of land based
development. The Steering Group believe any land based implications need to be better understood early
in the forward planning stages for the array and that this process should engage local community and
other stakeholders to ensure early consultation and input.
The project seeks to map the onshore implications arising from the 4 scenarios identified by the developer
relating to the operational and maintenance requirements of the offshore wind farm development, seeking
to optimise the socio economic benefit to the island and mitigate the negative consequences of each
scenario. The project has been developed in an inclusive manner involving the community of Tiree, the
developer and relevant public bodies who are involved in land use and marine planning and development
or who provide services such as health services and education services. The main aim is to secure a
sustainable vision for the future and provide a strategic decision-making tool, based on socio economic
and environmental appraisals.
The Consultants have advanced the study as an independent consultant report under the auspices of the
Steering Group. The Consultancy Brief is provided in Appendix 9.
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Section 1 Introduction
Tiree Onshore Scenario Mapping Study
1.3 Scope of Work / Approach
Ironside Farrar have completed the scope of work within a staged programme reporting to the Steering
Group on approximately a monthly basis and with separate stakeholder / technical meetings advanced as
required. The study has been progressed over the period July 2011 through to Autumn 2012 and
concluded with a presentation on main findings /next steps to the community / stakeholders in September
2012.
Inception & Desktop Review including Tiree site visit, August 2011
Develop Communication Strategy
Community Consultation Event 1 An Talla, Tiree, August 2011
Scenario Testing & Impacts Assessment
Mapping On-shore Requirements
Community Consultation Event 2 An Talla, Tiree, October 2011
Impact Assessment, Mitigation
Consultation Event 3 An Talla, Tiree, November 2011
Draft Consultation Report Consultation May 2012
Final Report Following Presentation at An Talla, September 2012
The appraisal methodology seeks to establish a framework for assessment of the 4 Scenarios identified by
ScottishPower Renewables (see section 3.0) based on the issues and opportunities and clarity of
objectives. The setting of objectives is important and offers value in so far as it:
Provides stakeholders with a tabulated indication of the assessment
Provides a basis for structuring the assessment process
Supports accountability and transparency of consultation
Provides clarity on issues where strong and potentially divergent views exist
The selected objectives relate solely to the operations and maintenance aspects (O&M) of the proposed
offshore array and are identified as broad goals of how O&M could contribute to island aspirations
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5
Section 1 Introduction
Tiree Onshore Scenario Mapping Study
1.4 Consultation
Consultation and local engagement has been central to the scope of work of this project with the intent of
ensuring the local community, local businesses and wider stakeholders are better informed as to the
potential implications of any future O&M operation on economic, social, and environmental issues.
Communications Strategy
The Communications Strategy aims to explore with as many groups as possible the issues that the
proposed Argyll Array project could have on the island of Tiree.
The Communications Strategy for the Tiree Onshore Scenario Mapping project has been tailored to
promote a two way communication both understanding local issues, concerns and sensitivities to seek to
provide additional evidence and technical information to inform debate and to ensure there is a clear
direction, purpose, objectives and outcomes.
The key consultees have included: the Steering Group members; Argyll and Bute Council; Scottish
Government; Marine Scotland; Highlands and Islands Enterprise; the Crown Estate; Tiree Community
Development Trust; Caledonian Maritime Assets Limited; Scottish Natural Heritage; NHS Highland and the
North of Scotland Public Health Network; and ScottishPower Renewables.
Workshop Consultations have been advanced with Argyll and Bute Council across Council Service
Departments (Corporate Services / Education /Economic Development / Planning / Transport /
Environmental Services / Business Gateway) and with Highland and Isles Enterprise and with Skills
Development Scotland. Community Consultation has involved 1 orientation/baseline visit; 3 Consultation
Events on Tiree; and 1 Consultation Event with Tiree Association in Glasgow. A number of one-to-one
business meetings held with local business interests and with specialist interest/representative and other
groups including Tiree Fishermen’s Liaison Group, NFUS; Coll Community Council and others (see
Appendix 7 for copies of the Consultation Boards).
The consultants report will provide a basis for wider consultation allowing all stakeholders with an interest
in Tiree and the future development of O&M to comment and make representation.
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7 Tiree Onshore Scenario Mapping Study
Section 2 Context
2.1 Place
The Isle of Tiree, in Gaelic, Eilean Tiriodh is the most westerly island of the Inner Hebrides, sitting some
sixty miles west of Oban and twenty-two miles west off Ardnamurchan, the nearest point on the Scottish
mainland. It has an area of 7,834 hectares (30.2 sq mi) and a permanent population of around 730 that
increases to approximately 2200-2400 in the peak summer season. The Isle of Coll sits close by to the
northeast. Tiree and Coll are both connected to Oban by the Cal Mac ferry service and with connecting
flights to Oban and Glasgow (Tiree only). Coll has an active community council equally interested in
engaging on issues associated with energy developments and the array.
Tiree is approximately twelve miles long and up to six miles wide. There are three hills; Ben Hynish in the
south rises to 462 ft, Ben Hough in the northwest tops at 390 ft and Beinn Ceann a’ Mhara at 338ft . The
island's beaches extend most of the way around the island's shoreline, a distance of forty-six miles
altogether. The name Tiree, Tiriodh or Tir Iodh, means 'the land of corn', and represents one of the most
fertile of the Hebridean islands.
Tiree Context
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Environment
Tiree has been known as the granary of the Hebrides, as grain crops grow well in Tiree's machair and
famously sunny weather. Tiree's land is shared between 286 crofts and five farms, with the land divided
into thirty one crofting townships, each managed by a Grazing Committee. In an agricultural sense, Tiree
has an outer ring of machair, a middle area of dark, rich, arable earth, and a centre of peaty ground called
sliabh. Machair creates a special and fragile environment of considerable ecological and conservation
value strongly dependent upon agricultural management in the form of seasonal grazings. Further detail
is provided in Appendix 2: Environmental Context.
Enterprise & Tourism
The economy of Tiree is sustained through the close integration of a number of sectors (tourism,
agriculture, leisure, fishing, commerce) typically operated as owner managed micro and small and medium
sized enterprises (SME’s) that combine with the service sector and help sustain wider aspects of
community life.
Tourism is an important part of the island's economy and supports a strong self catering and second
home/holiday home sector together with two hotels and a selection of guesthouses, bed and breakfasts
and self catering cottages. Local enterprise in terms of arts and crafts is strong and growing and there is
also a bank, post office, two general stores, a hardware store and electrical retailer, building supply and
construction related businesses, two garages and a variety of small studio art and craft galleries, web and
administration services.
Tiree is home to two major events with the Wave Classic and Tiree Music Festival. The Tiree Wave
Classic is the most prestigious and longest standing windsurfing event on the British calendar, which in
2011 celebrated its 25th Anniversary. The Tiree Music Festival is a two-day open air event having its
inaugural year in 2011and hosts the best of celtic music. The festival is becoming a key event in Tiree’s
cultural calendar.
Health
Tiree has had an increasing population size over the past ten years with increasing numbers of people of
working age. During this time the numbers of people of pensionable age has remained relatively stable. It
is likely however that the number of elderly persons living on Tiree will increase in the next 20 years .
Broadly similar conditions exist on Coll with a growing young population.
Life expectancy at birth is higher than the Scottish average.
Migration of people onto and off the island may change the age distribution of the population
differently to that of the mainland.
Health is an important consideration of both the proposed offshore array and any potential onshore
developments through O&M and the change in demographics / environment etc this would bring.
Capacity of local health services (GP and Dentist) with increased population
Lifeline Services – ability to access healthcare on the mainland
Impacts on health and wellbeing including mental health issues arising from proposed array
and associated on-shore development through O&M
Community issues arising from changes to population demographics
9 Tiree Onshore Scenario Mapping Study
Section 2 Context
Social & Community Infrastructure
The main township is Scarinish with important townships at Crossapol, Balemartine, Barrapol, Vaul and
Hynish. The island has all main services, including Primary / Secondary School / Community Centre /
Business Centre / Rural Centre / Places of Worship / Museum and transport facilities associated with the
airport and ferry terminal.
CMAL own and operate the Ferry Terminal and Pier on Tiree and the airport is owned and operated by
HIAL. There is a Public Service Obligation contract with Hebridean Air Services that links Oban with Coll,
Colonsay and Tiree. Transport infrastructure includes a local road network that comprises 47km (56%) B/C
Class Roads and 36km (44%) of unclassified roads. Single track roads are common. Roads on the Island
are lightly constructed and have generally evolved from un-surfaced tracks to roads that comprise of little
more than a thin bituminous surface and in varying states of repair.
Tiree School at Cornaigmore village provides full primary and secondary education. Tiree High School
teaches up to sixth year, for students aged about 18 and to university entrance standard. About half of the
island's population are Gaelic speakers, and the school teaches in both Gaelic and English. The school roll
currently stands at 94 (10 at pre-school, 44 primary and 40 secondary) and has capacity to grow although
investment is likely to be required in terms of buildings and additional teaching staff/support.
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2.2 Community
Tiree is located within the Oban South and the Isles Ward and is represented within the Argyll and Bute
Council by three Councillors. No Community Council exists on Tiree with local issues addressed through
the Tiree Community Development Trust (Isle of Coll represented by Community Council for Coll).
Tiree Community Development Trust (TCDT) (http://www.tireetrust.org.uk)
The Tiree Community Development Trust was formed in March 2006 and is owned, and managed by
Tiree’s community. It represents a community led approach to rural development promoting the
sustainable, environmental, economic and social development of Tiree. TCDT have prepared a number of
relevant documents relative to ambitions and issues for the island community. These include:
Tiree Community Growth Plan 2011-2016
Tiree Community Plan
Tiree Forum Publication: Tiree Today and for The Future
The TCDT in the Community Growth Plan 2011 - 2016 have set out their vision for the island of Tiree as
follows:
“In 2025 Tiree will continue to be a thriving and economically viable community sustaining a high quality of
life for all whilst safeguarding our remarkable environment, heritage and culture. By making the Island
more attractive to young people and families we will work towards a slow, sustainable population growth,
preventing a population decline”
Other Groups / Community and Stakeholder Voices
Tiree is a small island community with a breadth of small groups and specialist interests. Many of these
groups are established as ad-hoc groups to represent particular community interests, support community
projects, promote environmental conservation and address community concerns. Relative to this project
the important groups are:
No Tiree Array (http://www.no-tiree-array.org.uk/)
The No Tiree Array Group (NTA) is the campaign to resist the proposed construction of the Tiree (Argyll)
Array, or any ancillary development, within 35km of Tiree’s coastline.
Tiree Rural Development Ltd. (http://www.tireerd.org.uk/)
Tiree Rural Development Ltd (TRD) is a community company limited by guarantee with charitable status
charged with caring for the island’s land-based interest on behalf of its residents and visitors. The TRD
operates the mart from the Rural Centre. TRD projects relate to the island’s fragile biodiversity and
support for the crofting way of life
Tiree Association (http://www.tireeassociation.co.uk)
The Tiree Association was founded in 1900 and seeks to celebrate and promote ties with the Island of
Tiree, the Tiree Association takes pride in protecting and promoting Gaelic and Highland life for all
Tirisdeach's to enjoy.
11 Tiree Onshore Scenario Mapping Study
Section 2 Context
2.3 Policy Context
National & Regional Policy
The Government Economic Strategy sets out the scale of the challenge in putting Scotland on to a higher
sustainable growth path and identifies the targets that have been set to help meet that challenge. The
strategy identifies two clear, time-bound targets for increasing sustainable economic growth:
to raise Scotland's GDP growth rate to the UK level by 2011; and
to match the GDP growth rate of small independent EU countries by 2017.
The policy recognises that to achieve increased sustainable economic growth, Scotland needs to drive up
its performance in relation to three key components: productivity, participation and population.
Highlands and Islands Enterprise are working to deliver the Government Economic Strategy and ensure
the Highlands and Islands is a highly successful and competitive region so that increasing numbers of
people choose to live, work, study and invest here. HIE have four priorities to support Scotland's
economic recovery and deliver sustainable growth across the region. These are:
Supporting businesses/social enterprises to shape & realise growth aspirations.
Strengthening communities and fragile areas.
Developing key sectors, particularly distinctive regional opportunities.
Creating the conditions for a competitive and low-carbon region
Development Plan Framework
The Development Plan for the island of Tiree is the Argyll and Bute Structure Plan (2002) and the Argyll
and Bute Local Plan (2009). The Local Plan and the Structure Plan are currently being replaced by a
single Local Development Plan scheduled to be adopted mid 2013.
The first formal stage of the new plan has been completed with the publication of the Main Issues Report
on the 13th of May 2011 and subsequent public consultation. As part of the LDP Consultation an open day
was held on Tiree on the 16th of June 2011 for local residents to attend. It is intended to publish a
proposed Local Development Plan for Argyll and Bute in the third quarter of 2012 and adopt the new plan
by the middle of 2013. In addition to issues including access to affordable housing and adequate
infrastructure to service development needs, the potential Argyll Array off-shore wind farm is the biggest
potential development issue facing the island.
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13 Tiree Onshore Scenario Mapping Study
Section 3 Consultations
Consultations
3.0 Communications Strategy
The Communications Strategy aims to explore with as many groups as possible the issues that the
proposed Argyll Array O&M could have on the island of Tiree. The Communications Strategy for the Tiree
Onshore Scenario Mapping project has been tailored to promote a two way communication both
understanding local issues, concerns and sensitivities and providing additional evidence and technical
information to inform debate. The Strategy sought to develop the information provided to the community to
date and to ensure there is a clear direction, purpose, objectives and outcomes.
Steering Group Consultations
The key consultees have included the Steering Group members: Argyll and Bute Council; Scottish
Government; Marine Scotland; Highlands and Islands Enterprise; the Crown Estate; Tiree Community
Development Trust; Caledonian Maritime Assets Limited; Scottish Natural Heritage; NHS Highland and the
North of Scotland Public Health Network; and ScottishPower Renewables.
Officer Group Consultations
Workshop Consultations have been advanced with Argyll and Bute Council across Council Service
Departments (Corporate Services / Education /Economic Development / Planning / Transport /
Environmental Services / Business Gateway) and with Highland and Isles Enterprise and with Skills
Development Scotland.
Community and Stakeholder Consultations
Community Consultation has involved 1 orientation/baseline visit; 3 Consultation Events on Tiree; 1
Consultation Event with Tiree Association in Glasgow. A number of one-to-one business meetings held
with local business interests and with specialist interest/representative and other groups including Tiree
Fishermen’s Liaison Group, NFUS; Coll Community Council and others (see Appendix 7 & 8 ).
Consultation Summary August—December 2011
Total consultations: Local community event attendance 206 Local Businesses consulted 36 Tiree Association event attendees 18 Other Stakeholders (A&BC Officers etc) 21 Ad-hoc / Written Consultees 20 Representations to Report 10
Item Timescale
Initial Fact Finding Visit 5th – 6th August 2011
Consultation Event 1 An Talla 24th – 25th August 2011
Consultation Event 2 An Talla 2nd- 4th October
Consultation Event (Tiree Association) Glasgow 7thNovember 2011
Consultation Event 3 An Talla 29th– 30th November 2011
Reporting & Consultation May 2012
Presentation of Key Findings & Next Steps An Talla 20th September 2012
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15 Tiree Onshore Scenario Mapping Study
Section 3 Consultations
Consultations included various groups making reference to studies and project information and views collated through their respective organisations and web sites. Each of the organisations holds information and content that informs the debate and these importantly include:
Tiree Community Development Trust
http://www.tireetrust.org.uk
No Tiree Array http://www.no-tiree-array.org.uk/
Tiree Rural Development Ltd
http://www.tireerd.org.uk/
Tiree Association http://www.tireeassociation.co.uk
The three island based consultation events were each organised with a specific purpose and intent and are summarised below: Consultation Event 1 – Key Issues The focus of the initial Consultation Event was to seek to better understand community issues and the implications on the topics identified by the TCDT/Forum in its report ‘Tiree Today and for the Future’
Confirmation TCDT / Forum issues
12 Key Topic Issues and initial concerns raised from consultation
Jobs, Housing and implications for Education/Health /Life Style are key topic areas
Breadth of views from clear objection to positive support with most attendees reserving
position
Objectives and Outcomes broadly supported
Draft Objectives and Outcomes addressed key areas of concern
New and additional key issues advised at the consultation included:
Need more detailed information on the O&M Scenarios and Tiree benefits
Better understanding of any proposed development scale relative to way of life
Need to understand job opportunities; employment and skill sets required for jobs
Lack of clarity in any information on the scale of change and infrastructure needs
Lack of clarity on potential for disruption and impacts on transport (air/ferry/roads)
Re-iterated more strongly concerns regarding light pollution and helicopter noise
Recognition that Tiree has successfully accommodated change in the past
Need to consider wider opportunity for developer contributions to community benefits
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Consultation Event 2 – Key Issues
The focus of the second Consultation Event was to better understand the potential benefits and disbenefits
and the balance of impact and to review potential benefit associated with jobs, and any potential
community fund.
Detail presented on the key elements within 4 alternative scenarios
Detail presented on Changing Technology / Converter Station / O&M Procurement / Challenging
Environments
Summary Mapping presented showing possible relationships between O&M base, helicopter
facility, ferry terminal
Key Issues Raised through Consultation Event 2 included:
Presentation well received in terms of additional levels of information – but more detail & on-
going dialogue sought
Key opportunities recognised as including:
Local jobs & access to jobs
Local employment and training /apprenticeships for young people
Population growth with additional support for local goods and services
Long term economic benefit to island from investment
Key concerns remain associated with:
Level and Timing of Assurances in terms of commitment to delivery of local
benefits
Environmental impact associated with Helicopter Movements / Converter Station /
Harbour Requirements / Place Quality
Impacts of Array on tourism /environment and communities and O&M employment
leading to displacement of local jobs/job-shares
Interest in how wider community issues might be addressed – Community Partnership Fund
17 Tiree Onshore Scenario Mapping Study
Section 3 Consultations
Consultation Event 3 – Key Issues
The focus of the third Consultation Event was to outline and allow consultees to review the initial findings
and comment on the amendments to the scenario modelling relative to employment and other implications
associated with O&M.
Detail presented on the key elements within the 4 alternative scenarios
Detail presented on the amended Scenario Mapping outputs in terms of job numbers / housing /
school places and demand on services.
Additional mapping information provided on locational dependencies and potential scale of
developments including the converter station.
Summary Mapping presented showing possible relationships between O&M base, helicopter
facility, ferry terminal
Key Issues Raised through Consultation Event 3 included:
Limited attendance
Key points remain associated with:
Level and Timing of Assurances in terms of commitment to delivery of local
benefits and lack of clarity regarding Community Benefits
Environmental impact associated with Helicopter Movements / Converter Station /
Harbour Requirements / Impacts on Place Quality
Concerns expressed about delivery assurances, mitigation risks and scheme
fundability
Impacts of array on tourism /environment and communities and O&M employment
leading to displacement of local jobs/job-shares
Convertor Station and information relating to scale/size of this potential facility
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In summary Consultation Feedback has generated commentary relating to both opportunities and
concerns as follows:
Opportunities Concerns
The project will provide the island with more investment, opportunities and financial bene-fit; economic growth is essential on a small island like Tiree.
Tiree needs this, the windfarm = jobs + peo-ple = the island’s future.
Funded training will enable local people to take jobs.
Local building industry will benefit through the creation of indirect employment.
Local infrastructure will be improved.
Tiree is going backwards and it should be going forwards; the development will bring more families / people to the island.
Effects of the development, i.e. a growing population, more jobs, more children in the school, align with Tiree’s Growth Plan.
A broad range of jobs will be created.
A Community Fund could be created which would benefit the island over the next 20 years, providing a long term resource for the community.
Choosing a scenario with island involvement will provide local benefits.
Dispersing new housing across the island will reduce the impacts.
Recognition that the school requires help and the development offers the opportunity for this to happen.
Noise pollution by the helicopter flights as the island is downwind from the development site, residents will hear a lot of ‘air traffic’ to and from the site due to the amount of flights.
The ferry is already at capacity during much of the year, additional passengers will worsen this problem.
Loss of croft land will have a negative effect on the island.
An offshore converter would be very large and unsightly; however an onshore converter will also have a negative impact on the is-land.
The development would create a lot of light pollution on and offshore.
The suggestion that 60% of the workforce will have families is too high.
Concern over who will buy new housing and whether houses will become even less af-fordable for local residents.
Concern the island will become a ‘hub’ for other offshore wind developments on the west coast.
Concern that Gaelic will be diluted.
Worry that the sense of community will be lost on the island as a result of the proposed development.
Concern over the negative impact the devel-opment will have on tourism.
Fear that the development may drive people to move off the island
19 Tiree Onshore Scenario Mapping Study
Section 3 Consultations
An important part of the consultation process has been developing the understanding of the issues around core and shared visions for the island whilst recognising that the balance of these issues varies between supporters and objectors to the array and these influence discussions on O&M. A number of objectives were developed and consulted upon at each of the Consultation Events seeking to establish the importance of protecting key assets of the island that contributes to its qualities of place, community, life style and island economy. These are as follows: Agriculture Objective: To seek to maintain current land management practice and capacity including access to markets and sustaining agricultural / crofting employment Fishing Objective: To seek to maintain the fishing industry at current levels and/or support modest sustainable growth through improvements to infrastructure and secondary support for fishing incomes. Design & Construction Objective To seek to ensure place quality is enhanced, derelict and vacant land and buildings are utilised, sustainable design principles and local bespoke design guidance is adopted. Education Objective: To seek to ensure any additional population growth associated with O&M supports educational provision on the island. Employment Objective To seek to increase local employment opportunities that support skills and training and opportunities for young people whilst growing the locally employed population base and non-seasonal job opportunities. Heritage Objective: To seek to protect social, environmental and cultural heritage recognising a risk associated with de-population that impacts on a vibrant island cultural life. Nature Conservation Objective: To seek to respect nature conservation designations and ensure any future planning and design take full account of environmental/ impacts and conservation of natural systems. Housing Objective To seek to ensure any additional population growth associated with O&M provides housing complementary to the existing settlement structure and its distinctive place qualities. Noise Objective: To seek to ensure that the noise environment is addressed with specific reference to helicopter access and
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servicing. Tourism Objective: To seek to maintain the ‘special qualities of place’ that support the tourism sector recognising the
importance of sports / leisure / recreation and cultural heritage to the tourism economy
Transport Objective:
To seek to maintain and enhance transportation access within the modes of air, sea and road with
appropriate improvements to infrastructure or service levels that recognise the needs of all sectors.
Health
To seek to maintain access to health facilities and ensure provision addresses future health needs
Visual Change
To seek to ensure that the visual environment is addressed with specific reference to place quality,
buildings and design.
Way of Life
To seek to maintain a special ‘way of life’ that offers a diversity of community interests, opportunity for
enterprise, for relaxation and amenity that support civic community capacity and health and avoids the loss
of the things that make Tiree a special place to live, work and visit.
The objectives have been used to allow comparative assessment and high level analysis of the four
scenarios and these are summarised in Section 6.
21 Tiree Onshore Scenario Mapping Study
Section 3 Consultations
Scenario 1Onshore O&M Base Scenario 2 Offshore O&M Base Platform
Scenario 3 Offshore O&M Base Motheship Scenario 4 Onshore O&M Base / Mothership
23 Tiree Onshore Scenario Mapping Study
Section 4 Scenarios
Operations & Maintenance Scenarios
The Scottish Government and the Crown Estate advise that the Argyll Array has the potential to provide more
than one fifth of Scotland’s electricity needs and generate a capacity of 1800MW of clean, low carbon energy.
ScottishPower Renewables anticipate an investment of over £6.5 billion and are advancing a development
programme that would extend from the current feasibility and development stage through to implementation and
an operational site anticipated 2020+. The windfarm would be anticipated to operate for at least 25 years with
potential for re-powering beyond this period.
4.1 SPR’s O&M Scenarios
ScottishPower Renewables at this early Feasibility & Development Stage have developed four potential
O&M scenarios relating to the operations and maintenance activity. These are as follows:
Scenario 1 - Onshore O&M Base
An onshore base on the island (office/warehouse/yard) with up to five workboats and one helicopter
accessing the array. Requires a harbour or breakwater.
Scenario 2 - Offshore O&M Base (Platform)
An offshore platform, located within the array, with workboats and one helicopter stationed on the platform.
Scenario 3 - Offshore O&M Base (Mothership Operating from Mainland Port)
Two motherships, stationed within the array, with daughter workboats and one helicopter stationed on the
motherships with the mothership working from a mainland port.
Scenario 4 - Onshore O&M Base / Mothership (Operating from Tiree)
A combination of scenarios 1 and 3 with an arrangement based on motherships /daughter workboats
working within the array, with the motherships and helicopter working from a Tiree base. Requires a
harbour or breakwater.
Each of these scenarios may have varying implications for any associated onshore development. It is
important that each scenario is better understood, analysed and the onshore implications identified and
mapped to assess the potential environmental, socio economic and health/wellbeing impacts.
The study has included development of each of the four scenarios and these are summarised on pages 27
to 47. It should be noted these are scenarios based on best understandings and pre-date detailed marine
surveys, turbine supply and operational reviews that will influence future development of the preferred
O&M strategy.
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4.2 Scenario Planning – A Forward Planning Tool
Scenario Planning is a tool to help stakeholders and others better understand the implications of change
and assist consultation on how to manage potential futures more effectively.
SPR are at an interim stage in developing the scenarios and the figures used we understand are based on
assumptions and best estimates. This should be recognised as a qualification to the quantitative
assessment of the four scenarios and highlights the challenge of providing meaningful and robust outputs
early in the development planning process.
Scenarios are widely used by various organisations and groups to assess change and help to inform views
and future decisions. The information can inform debate by looking at existing facilities or experience and
making assumptions about possible futures.
The scenario planning process can however provide a useful tool to highlight:
Principal factors that create or drive change e.g. jobs, people, demand for services
Provides a range of percentage assumptions to provide a better understanding of the range of
change that might occur e.g. population growth / proportion of local versus new jobs
Provides an explanation of likely outcomes based on understanding of existing baseline
25 Tiree Onshore Scenario Mapping Study
Section 4 Scenarios
4.3 Key Issues influencing Benefits & Impacts
The key factors influencing change relative to the Onshore O&M Scenario Mapping can be addressed
within each scenario based on an assumption of the level of activity e.g. assumed number of new
employees choosing to live on Tiree or assumed number of new residents seeking new homes verses use
of existing housing stock
Key areas that the scenario planning (see also Appendix 3) looks to address include:
Nature of O&M Scenario
- Onshore, Offshore Platform, Offshore Mothership, Onshore plus Mothership
People required for each O&M Scenario
- Onshore, Offshore - Tiree based Staff / Local jobs / Incoming workers
Employment Profile for each O&M Scenario
- Job Description / Skills Required / Training Support / Commitment to Local Job access
Need & Implications for Community Infrastructure
- Housing, Education, Healthcare and Lifeline service provision and Way of Life
Need and Implications for Transport Infrastructure
- Harbour upgrading , road access, ferry capacity, workboat facilities, helicopter access
Need and Implications for Physical Infrastructure
- Office, Workshop, Land Area, Maintenance Space, Harbour, ICT.
The diagram below illustrates some of the potential estimated outcomes that can be derived from scenario
planning.
26 IronsideFarrar
Image of London Array O&M Building
27 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 1
Overall Summary of Economic / Social & Environmental Impacts
Economic
Direct Employment - 150 Array jobs (50% increase in current jobs base of island)
Indirect Employment - 50 net additional jobs
Approx £6.7 million net additional GVA per annum from all additional economic activity
Substitution - Around 30-50 existing jobs would need to be back-filled as a result of residents choosing to
work on proposed Array (50/50 between full and part-time jobs)
20-25 new residents seeking work on Tiree (outwith Array) with 5 new residents establishing new
businesses on Tiree (assume home workers)
26-33 new houses needed with one-off construction impacts from housing development equivalent to 20
one-off annual jobs and £600,000 GVA
New harbour – assume inclusion of 25 new marina berths for leisure purposes (+ 25 permanent)
Tourists (potential for marina) + visiting friends + relatives generating local spending of £630,000 per
annum less £100,000 per annum lost from holiday homes becoming permanent residences
* SCADA - Supervisory Control & Data Administration
An onshore base would have a Tiree base operating between the O&M office and workshops, harbour
and helipad. This would include:
Full O&M base including Office space, Maintenance and Workshop and Laydown space
Helicopter pilot office within O&M base
SCADA* control room not on Tiree (utilise existing mainland facility)
5 x Workboats
Helipad (1 x helicopter Eurocopter 135 or similar)
Harbour upgrade would be required including breakwater
The proposed offshore array would be managed from an O&M base on Tiree.
Summary of Key Implications for Tiree
Onshore staffing would mean direct impacts and benefits to Tiree coupled with a requirement for a built facility
or development of facilities on the island. The harbour would need to be upgraded to provide facilities for
workboats and the helipad would be stationed at either the harbour or the airport. Potential for Convertor Sta-
tion on the island still to be confirmed by SPR.
Key Areas that Need to be Addressed
Onshore O&M facilities will have implications on key areas of the islands economy and services that will re-
quire forward planning and dialogue to ensure change is managed and local communities are engaged in both
the decision making process and mechanisms for delivery.
Comparative Assessment
Scenario 1 - Onshore O&M Base
28 IronsideFarrar
Socio – Economic
Increased population supports community infrastructure / resilience
Supports more balanced demographic – age structure /social environment
Increased population supports argument for improved ferry/air - lifeline services
Greater demand for local goods and services
Increased demand in sectors Hotels /Leisure/Retail sector
In addition to the benefits there is also potential for negative impacts to occur, namely a large influx of new
people living on the island, possible reduction in crofting activity, change in land management (potentially
affecting tourism), dilution of Gaelic culture, loss of way of life, increased crime, vehicle damage to
machair, etc.
Environmental
New harbour would need to be designed to ensure that there are no impacts on bird assemblages within
SPA, SSSI and Ramsar site – Environmental Impact Assessment and Habitats Regulation Appraisal likely
to be required—SNH will need to be consulted at early stage in harbour planning.
Any development proposed at the airport would need to consider potential for impacts on the Tiree
Machair SAC.
Noise associated with helicopter flights – commitment to flight paths to avoid residential areas.
Construction Method Statements for development activity
Employment – Jobs /Skills and Training
Job Generation
SPR estimate that an onshore O&M base on Tiree would generate up to 150 FTE jobs on Tiree with 38 of these
jobs available to local people and 112 jobs for people relocating to the island.
Mitigation and Opportunities
The level and range of local job opportunity and training support for young people is an important local issue
around which the community is seeking assurance. Types of assurance which would be helpful could include:
Offshore Array Employment Charter e.g.
- Commitment for local employment within O&M service contracts
Education Charter e.g.
- Commitment to higher and further education bursaries
Public & Private Sector collaboration for advance skills training and career guidance e.g.
- Advance skills training programmes Commitment to Apprenticeships
- Commitment to adult & youth apprenticeships for technical support jobs
29 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 1
Built Development - O&M Facilities
O&M Facilities Required
The employment predictions establish office and workspace requirements and all supporting external space. The
O&M operator will require a modern fully equipped facility with all normal servicing. The development will be
expected to meet all Planning and Sustainable Design Guidance of Argyll and Bute Council and other agencies.
Space requirements could be anticipated as follows:
Office space 600m2 – 2 storey building with 9m eaves height
Modern open plan with ancillary services for boat and helicopter crews
Full Broadband / ICT
Workshop space 2500m2 – single storey with 9m eaves height
Stores and warehouse facility for spares and maintenance consumables
External space - 1000m2 - secure yardage
Car & vehicular parking; fuel bunkering; external storage
Helipad facility (if located with O&M base)
Hangar (500m2); Helipad Space (360m2)
Opportunity and Mitigation
The scale of built development compares broadly with larger agricultural buildings on the island. These typically
are of 800-1200m2. Opportunity and Mitigation may be achieved by:
Addressing needs with regard to A&BC Local Plan Industrial Land Allocation e.g.
- Developing brown field land and minimising land take of land under agriculture
Compliance with A&BC Sustainable Design Policy and Guidance e.g.
- Limiting main building heights to maximum 9m to eaves
- Considering scaling buildings to reflect current island scale
Employment of local architects / trades
30 IronsideFarrar
Housing Requirements
Housing provision will be in part dependent on the level of local employment uptake (e.g. level of existing
residents taking up jobs). In the Scenario Mapping we have assumed potential levels of local job uptake of
between 15–25–35%. Assumptions on new build, locally purchased, restored and rented properties allow levels of
new build housing to be estimated.
Opportunity and Mitigation
New housing needs to be developed in a manner sensitive to the settlement patterns of the island and seek to
support local access to housing for young people from the island taking up employment in O&M. A number of
housing scenarios could be envisaged including:
Growth of a single Township e.g.
- Settlement extension providing between 26 and 33 new homes
Extension to a number of Townships across the island e.g.
- Assuming 6 townships equates to up to 6 houses per township
Dispersed housing e.g.
- New housing throughout the island and on Brownfield land wherever possible
Housing is an important local issue around which the community is seeking assurance about quality and building
design. Opportunity exists for housing refurbishment alongside contemporary new build in a manner that builds on
community infrastructure and existing island skills capability and supports demand for goods, services & indirect
jobs.
Infrastructure - Harbour / Airport / Roads
Harbour
The O&M operations will be operated by 5 workboats typically of 28m in length providing the service support and
personnel access to the turbines in combination with the helicopter. A harbour facility created by a breakwater
and offering pontoon / quay access will be required.
Harbour Breakwater
- Offering berthing for workboats all year round
Pontoon and Quay facilities
- 150 (+10)m sheltered pontoon length
- Marine fuel bunkering (200,000l capacity) serviced and refuelled by sea-barge. It is not anticipated that
workboat fuelling would require fuel import by the existing ferry.
Airport/Heliport
The O&M operation could be supported by a helicopter base either at the harbour or potentially at the airport.
Helicopter provision would include a hangar, helipad and fuel bunkering. Flight levels are currently under
assessment but worst case numbers suggest 7-12 return flights per day. SPR advise that fuelling provision for
helicopters will not involve use of the ferry.
Local Roads
The O&M operation may require some local Road Network upgrading but only in the immediate local area of the
O&M Base or between the base and the harbour. Access to the harbour / breakwater will be required for vehicles.
31 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 1
If helipad facilities were located at the airport volumes of traffic are unlikely to be significant. Existing road
provision between the harbour and airport is considered to be adequate for the increased levels of use
anticipated.
Opportunity and Mitigation
Infrastructure clearly needs to match any intensification of use whether this be associated with harbour/airport or
roads. Local road improvements may offer wider benefits as would development of the harbour. Issues requiring
to be addressed would include:
Harbour feasibility study should be advanced as this represents the most significant island infrastructure
requirement for Scenario 1
- Scenario 1 is predicated on a Harbour
- Harbour at Gott Bay would involve 3+ year lead time & c. £15+ million investment
- Harbour planning needed in advance of Array commitment
- O&M facility has strong dependencies with Ferry Terminal & other transport infrastructure
- O&M operations will utilise airport (fixed wing) capacity in preference to extended helicopter flights
- Harbour improvements may offer wider support to existing local businesses e.g.
- Creating access for fishing / recreational boats and improving ferry weather protection and berthing ability
Helicopter flights paths across defined sea routes could mitigate island over-flying.
Community Infrastructure
Education
The school roll currently stands at 94 (10 at pre-school, 44 primary and 40 secondary). Higher and further
Education is provided on the mainland. Scenario 4 O&M operations would increase the resident population and
increase the school roll. Based on a multiplier of 0.27 primary pupils per household (with families) and 0.2
secondary pupils per household (with families) the additional educational needs would include up to 9 Primary
Pupil places and up to 7 High School places.
Health
O&M operations would potentially add 143 to an existing resident population of around 730. On the basis of new
resident assumptions this could create additional demand on healthcare and community infrastructure. Health
provision is responsive to demand/population with a particular need however to address community care.
Lifeline Services – Air and Ferry connections
Scenario 1 O&M operations by increasing island population will place additional demand on air and ferry
connections. A 20% increase in population will require a review of current air and ferry capacity. Vehicular ferry
capacity at weekends & in the summer months is near or at capacity. Reducing ferry cancellations and any
improvement to capacity would offer local benefits.
Opportunity and Mitigation
A growing population would introduce both opportunity and impacts with mitigation dependent on investment in
local capacity. Discussions are being progressed with a number of key service providers to identify any specific
measures or responses.
Discussions with CMAL / Calmac and HIAL regarding Lifeline services and need for forward planning to
accommodate increased demand for these services
Harbour feasibility study should be advanced
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33 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 2
Overall Summary of Economic / Social & Environmental Impacts
Economic
Direct Employment - 5 Array jobs, equating to 2% increase in current jobs base of Tiree
Indirect Employment - very limited additional jobs or GVA for island
Substitution - No substitution issues over existing jobs needing to be back-filled
1 new residents seeking work on Tiree (outwith Array) with no new residents establishing new businesses
on Tiree
2-3 new houses needed, of which all assumed to be new build with one-off construction impacts from
housing development equivalent to 2-3 one-off annual jobs and £0.1m GVA
Visiting friends + relatives generating very limited local spending of c. £1,000 per annum
no negative impact on existing visitor numbers through lost holiday homes
An offshore platform, located within the array, with workboats and one helicopter based on the
platform.
No O&M base on Tiree
No SCADA control room (utilise existing mainland facility)
Helicopter Station provided on mainland but with some limited use of Tiree (airport) and offering a poten-
tial link for local employees
No O&M Support infrastructure required on Tiree
The proposed offshore array would be managed from a main land base with O&M activity operated from the
platform.
The platform would operate similar to oil and gas developments with O&M staff recruited nationally and flown/
transported to the platform by air or boat from a mainland airport/port. No daily contact with Tiree would be
required but fortnightly employment flights to the platform may be possible.
Summary of Key Implications for Tiree
Offshore staffing would mean no direct impacts or benefits to Tiree and no requirement for a built facility or
development of facilities. Employment opportunity may exist at a minimal scale. Potential for Convertor Station
on the island still to be confirmed by SPR.
Key Areas that Need to be Addressed
Lack of Tiree based opportunity will require access to training schemes and opportunities - A wider opportunity
would exist as part of the Argyll and Bute Renewable Energy Action Plan (REAP) to participate in wider skills
and training programmes aimed at developing skills/competencies for the Renewable Energy Sector.
ScottishPower Renewables (SPR), in discussion with the Tiree Community Development Trust (TCDT), have
agreed the establishment of the Tiree Renewable Energy Skills, Education and Training (RESET) Fund. This
fund will be used to provide financial support to eligible candidates pursuing post-school education or training,
as defined in the Tiree RESET Fund Rules 2012-13 up to a total of £10,000 for 2012/13.
Scenario 2 - Offshore Platform
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Socio – Economic
No O&M based change to population on Tiree - any population structure changes will be in relation to
existing factors i.e. availability of local jobs and employment
No potential for improved ICT infrastructure etc through O&M activity
There could be opportunity for access to training through for example Education Charters, Bursaries and
Apprenticeships associated with the proposed array.
Environmental
No harbour/breakwater would be required, nor any built development on the island with the exception of
the convertor and therefore no anticipated environmental considerations or protection requirements.
Potential environmental impacts of any onshore convertor needs to be assessed.
Visual effects of the proposed offshore rig will need to be addressed in consultation with Marine Scotland
Occasional helicopter flights associated with this Scenario and therefore noise associated with helicopter
flights should be addressed through commitment to flight paths minimising impacts on residential areas.
Employment - Jobs /Skills/Training
Job requirements are broadly comparable to onshore facilities but none of the jobs would be based on Tiree.
However a limited number of employees may be based on Tiree. The issue of skills requirements and
development is currently being considered as part of the Argyll and Bute Renewable Energy Action Plan (REAP).
Built Development – O&M Facilities
Built development on Tiree would be limited to a potential converter station onshore.
No O&M workshop / office or other facilities would be proposed on Tiree.
All supplies would be sourced from a mainland base and delivered by air/sea directly to the rig.
Housing
Limited housing requirement on Tiree. Employment would be typically nationally recruited and access to the
platform coordinated from the mainland O&M Base airport/port facility.
Infrastructure - Harbour / Airport / Roads
No harbour works required
No airport works required albeit that helicopter access to the existing airport may be used to a limited degree (e.g.
for taking any locally employed people to and from the platform)
35 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 2
No road improvement works required associated with O&M
Community Infrastructure
No additional load on community infrastructure except perhaps a potential requirement for medical support for
non-surgical accidents / medical attention not provided by platform staffing, on a limited /occasional basis.
Lifeline Services – Air and Ferry connections
No additional air or ferry requirements and no impact on existing ferry provision.
36 IronsideFarrar
37 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 3
Overall Summary of Economic / Social & Environmental Impacts
Economic
Direct Employment - 25 Array jobs, (8% increase in current jobs base of island)
Indirect Employment - 5 net additional jobs on Tiree
Approx £1.1 million net additional GVA per annum from all additional economic activity
Substitution - 5-10 existing jobs would need to be back-filled as a result of residents choosing to work on
proposed Array (split 50/50 between full and part-time positions)
5-10 new residents seeking work on Tiree (outwith Array) assume 1 new resident establishing a new
business on Tiree;
4-6 new houses needed for new residents, of which one-off construction impacts from housing
development equivalent to 5-6 one-off annual jobs and £0.2m GVA
Visiting friends + relatives generating limited additional local spending of £7,000 per annum with lost spend
of £10,000 per annum from holiday homes becoming permanent residences.
Two motherships, stationed within the array, with daughter workboats and one helicopter stationed on the motherships with the mothership working from a mainland port. Operational control centre on Tiree but limited to office based functions, with no wider O&M support
infrastructure (e.g. motherships) required on Tiree No SCADA control room (utilise existing mainland facility) No workshop facility Helicopter Station provided on Tiree
The proposed offshore array would be managed from a local Operational Control Centre based on Tiree and potentially located at the airport alongside helipad facilities. All physical operations and maintenance activity will be managed from the motherships with the vessels acting as a mobile platform. O&M staff would return to the mainland operating port, based on a shift pattern arrangement. No daily contact with Tiree would be re-quired but fortnightly employment flights for local employees to the mothership may be possible. Summary of Key Implications for Tiree Offshore staffing would limit the impacts or benefits to Tiree with these limited to the operational control centre.
Offshore employment opportunity may exist but would not be locally connected and access to opportunity may
be more restricted than in Scenarios 1 and 4. Potential for Convertor Station on the island still to be confirmed
by SPR.
Key Areas that Need to be Addressed
Offshore staffing would limit the impacts or benefits to Tiree with these limited to the operational control centre
and helicopter activity. Offshore employment opportunity may exist but would not be directly locally connected
and access to opportunity may be more restricted than in Scenarios 1 and 4.
Scenario 3 - Offshore Motherships
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Socio – Economic
No significant O&M based change to population on Tiree or resulting significant change to island services
or businesses - any population structure changes will be in relation to existing factors i.e. availability of
local jobs and employment
Potential for improved ICT infrastructure etc through O&M activity (through Operattional Control Centre)
Opportunity for access to training could exist through for example Education Charters, Bursaries and
Apprenticeships associated with the proposed array.
Environmental
No harbour/breakwater would be required on the island so no potential impacts.
Environmental design of any buildings would minimise potential impacts e.g. visual in line with Tiree
Design Guide
Any development proposed at the airport would need to consider potential for impacts on the Tiree
Machair SAC.
Potential environmental impacts of any onshore convertor needs to be assessed.
Noise associated with helicopter flights – commitment to flight paths to avoid residential areas.
Construction Method Statements for development activity
Employment – Jobs /Skills and Training
Job Generation
SPR estimate that O&M from Offshore Motherships with only the operations control centre and helipad on Tiree
would generate up to 25 FTE jobs on Tiree with 6 jobs for local people and 19 jobs for those relocating to the
island.
Job requirements for the project are broadly comparable with those in scenario 1 with the difference being the
majority of jobs would not be based on Tiree. The issue of skills requirements and development is currently being
considered as part of the Argyll and Bute Renewable Energy Action Plan (REAP).
Mitigation and Opportunities
The level and range of local job opportunity and training support for young people is an important local issue
around which the community is seeking assurance. Types of assurance which could be helpful could include:
Offshore Array Employment Charter e.g.
- Commitment for local employment within O&M service contract
Education Charter e.g.
- Commitment to higher and further education bursaries
Public & Private Sector collaboration for advance skills training and career guidance e.g.
- Advance skills training programmes Commitment to Apprenticeships
- Commitment to adult & youth apprenticeships for technical support jobs
39 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 3
Built Development - O&M Facilities
O&M Facilities Required
Built development on Tiree would include a potential converter station, an operational control centre and
helicopter station/ hangar/helipad. The converter station could be proposed for either offshore or onshore – no
decision has yet been made. No O&M workshop on the island would be required. Typically all supplies would be
sourced from a mainland base and delivered by air/sea.
The employment predictions establish office and workspace requirements that should also allow for expansion
and all supporting external space. The O&M operator will require a modern fully equipped facility with all normal
servicing. Built development on Tiree will be expected to meet all Planning and Sustainable Design Guidance.
Space requirements on Tiree are anticipated follows:
Operations Control Centre 150m2
- Modern open plan with ancillary services for helicopter crews
- Full Broadband / ICT
Mixed / Multi-function Workshop 500m2 – single storey with 9m eaves height
- Stores and warehouse facility for spares and maintenance consumables
External space - 250m2 - secure yardage
- Car & vehicular parking; fuel bunkering; external storage
Helipad facility
- Hangar (500m2); Helipad Space (360m2)
Opportunity and Mitigation
The scale of built development compares broadly with larger agricultural buildings on the island. These typically
are of 800-1200m2. Opportunity and Mitigation may be achieved by:
Addressing needs with regard to A&BC Local Plan Industrial Land Allocation e.g.
- Developing brown field land and minimising land take of land under agriculture
Compliance with A&BC Sustainable Design Policy and Guidance e.g.
- Limiting main building heights to maximum 9m to eaves
- Considering scaling buildings to reflect current island scale
- Employment of local architects / trades
40 IronsideFarrar
Housing Requirements
Housing provision will be in part dependent on the level of local employment uptake (e.g. level of existing
residents taking up jobs). In the Scenario Mapping we have assumed potential levels of local job uptake of
between 15–25–35%. Assumptions on new build, locally purchased, restored and rented properties allow levels of
new build housing to be estimated.
Opportunity and Mitigation
New housing needs to be developed in a manner sensitive to the settlement patterns of the island and should
seek to support local access to housing for young people from the island taking up employment in O&M. A
number of housing scenarios could be envisaged including:
Growth of a single Township e.g.
- Settlement extension providing between 4 and 6 new homes
Extension to a number of Townships across the island e.g.
- Assuming 6 townships equates to 1 house per township
Dispersed housing e.g.
- New housing throughout the island on Brownfield land wherever possible
Housing is an important local issue around which the community is seeking assurance about quality and building
design. Opportunity exists for housing refurbishment alongside contemporary new build in a manner that builds on
community infrastructure and supports demand for goods, services & indirect jobs.
Infrastructure - Harbour / Airport / Roads
Harbour
No harbour works required.
Airport/Heliport
O&M helicopter base on Tiree operating from the airport or harbour with new hangar/fuel bunker and support
facility (Operational Control Centre) and linking to offshore motherships. Flight levels are currently under
assessment but worst case numbers suggest 1-5 return flights per day. SPR advise that fuelling provision for
helicopters will not involve use of the ferry.
Local Roads
No road improvement works required associated with O&M. If Operational Control Centre and helipad facilities
were located at the airport volumes of traffic are unlikely to be significant. Potential impacts of any onshore
convertor needs to be assessed.
41 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 3
Opportunity and Mitigation
There is no anticipated intensification of use whether this be associated with harbour/airport or roads. Issues
requiring to be addressed would include:
Helicopter flights paths across defined sea routes could mitigate island over-flying.
Need to protect existing air and sea capacity through service demand and capacity planning with key
bodies including CMAL and Argyll and Bute Council.
Community Infrastructure
Education
The school roll currently stands at 94 (10 at pre-school, 44 primary and 40 secondary). Higher and further
Education is provided on the mainland. Scenario 3 O&M operations would increase the resident population and
increase the school roll. Based on a multiplier of 0.27 primary pupils per household (with families) and 0.2
secondary pupils per household (with families) the additional educational needs would include up to 2 Primary
Pupil places and up to 1 High School places.
Health
O&M operations would potentially add 19 to an existing resident population of around 730. On the basis of new
resident assumptions this could create limited additional demand on healthcare and community infrastructure.
Health provision is responsive to demand/population with a particular need however to address community care.
Lifeline Services – Air and Ferry connections
Limited additional ferry requirements would arise from Scenario 3.
Opportunity and Mitigation
A growing population would introduce both opportunity and impacts with mitigation dependent on investment in
local capacity. Discussions are being progressed with a number of key service providers to identify any specific
measures or responses.
42 IronsideFarrar
43 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 4
Overall Summary of Economic / Social & Environmental Impacts
Economic
Direct Employment - 59 Array jobs (19% increase in current jobs base of island)
Indirect Employment - 30 net additional jobs
Approx £2.8 million net additional GVA per annum from all additional economic activity
Substitution - 10-20 existing jobs would need to be back-filled as a result of residents choosing to work at
Array (split 50/50 between full and part-time positions)
10 new residents seeking work on Tiree (outwith Array) and assume 2 new residents establishing new
businesses on Tiree
10-13 new houses needed for new residents with one-off construction impacts from housing development
equivalent to 10 one-off annual jobs and £0.3m GVA
Assume 50 new marina berths, of which 25 permanent/25 visitor (attracting new visitors)
Tourists (potential for marina) + visiting friends + relatives generating local spending of £600,000 per
annum less £20,000 per annum lost from holiday homes becoming permanent residences.
A combination of scenarios 1 and 3 with an arrangement based on motherships /daughter workboats working within the array, with the motherships and helicopter working from a Tiree base. O&M Office space, Maintenance and Workshop, Laydown space on Tiree Helicopter pilot office within O&M base SCADA control room not on Tiree (utilise existing mainland facility) 2 Motherships Helipad (1 x helicopter Eurocopter 135) Harbour upgrade would be required including breakwater
The proposed offshore array would be managed from Tiree including all operational and maintenance activity excluding SCADA /off-site monitoring control. The motherships would operate from an enhanced harbour but would be stationed on-field returning to Tiree for re-supply, crew changeovers and parts on a regular cycle – probably fortnightly, with one mothership returning to Tiree each week. Helicopter flights would support the motherships and would work in combination with the motherships in delivering technical engineers to the tur-bines. It is not envisaged that turbine towers, nacelles or blades would be stored on the island. Key activities would include operational management, marine & flight logistics, programme management and engineering support. Summary of Key Implications for Tiree The numbers of O&M staff living on Tiree is anticipated to be 59 people but the potential catchment would be wider allowing mainland and Coll resident employees to access Tiree for the shift changes moderating the likely demands for local services, housing and community infrastructure. Critical to this scenario is develop-ment of harbour facilities. Potential for Convertor Station on the island still to be confirmed by SPR. Key Areas that Need to be Addressed Onshore O&M facilities will have implications on key areas of the islands economy and services that will re-quire forward planning and dialogue to ensure change is managed and local communities are engaged in both the decision making process and mechanisms for delivery.
Scenario 4 - Onshore Base /Motherships
44 IronsideFarrar
Socio – Economic
Level of population increase would support community infrastructure / resilience and more balanced
demographic – age structure /social environment
O&M based change to population on Tiree would support island services - need to ensure that demand is
accommodated without affecting Lifeline Services (air/ferry)
In addition to the benefits there is also potential for negative impacts to occur, namely a large influx of new
people living on the island, possible reduction in crofting activity, change in land management (potentially
affecting tourism), dilution of Gaelic culture, loss of way of life, increased crime, vehicle damage to
machair, etc.
Environmental
New harbour would need to be designed to ensure that there are no impacts on bird assemblages within
SPA, SSSI and Ramsar site – Environmental Impact Assessment and Habitats Regulation Appraisal likely
to be required—SNH will need to be consulted at early stage in harbour planning.
Any development proposed at the airport would need to consider potential for impacts on the Tiree
Machair SAC.
Noise associated with helicopter flights – commitment to flight paths to avoid residential areas.
Construction Method Statements for development activity
Employment – Jobs /Skills and Training Job Generation
SPR estimate that an onshore O&M base on Tiree would generate up to 59 FTE jobs on Tiree with 15 of these
jobs available to local people and 44 jobs for people relocating to the island.
Mitigation and Opportunities
The level and range of local job opportunity and training support for young people is an important local issue
around which the community is seeking assurance. Types of assurance which could be helpful could include:
Offshore Array Employment Charter e.g.
- Commitment for local employment within O&M service contract
Education Charter e.g.
- Commitment to higher and further education bursaries
Public & Private Sector collaboration for advance skills training and career guidance e.g.
- Advance skills training programmes Commitment to Apprenticeships
- Commitment to adult & youth apprenticeships for technical support jobs
45 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 4
Built Development - O&M Facilities
O&M Facilities Required
The employment predictions establish office and workspace requirements and all supporting external space. The
O&M operator will require a modern fully equipped facility with all normal servicing. The development will be
expected to meet all Planning and Sustainable Design Guidance. Space requirements could be anticipated as
follows:
Office space 600m2 – 2 storey building with 6m eaves height
Modern open plan with all ancillary services for boat and helicopter crews
Full Broadband / ICT
Workshop space 2500m2 – single storey with 9m eaves height
Stores and warehouse facility for spares and maintenance consumables
External space - 1000m2 - secure yardage
Car & vehicular parking; fuel bunkering; external storage
Helipad facility (if located with O&M base)
Hangar (500m2); Helipad Space (360m2)
Opportunity and Mitigation
The scale of built development compares broadly with larger agricultural buildings on the island. These typically
are of 800-1200m2. Opportunity and Mitigation may be achieved by:
Addressing needs with regard to A&BC Local Plan Industrial Land Allocation e.g.
- Developing brown field land and minimising land take of land under agriculture
Compliance with A&BC Sustainable Design Policy and Guidance e.g.
- Limiting main building heights to maximum 9m to eaves
- Considering scaling buildings to reflect current island scale
- Employment of local architects / trades
Housing Requirements
Housing provision will be in part dependent on the level of local employment uptake (e.g. level of existing
residents taking up jobs). In the Scenario Mapping we have assumed potential levels of local job uptake of 25%.
Assumptions on new build, locally purchased, restored and rented properties allow levels of new build housing to
be estimated.
11 new homes built
13 existing homes restored/purchased
19 Other + rented / part time residents
46 IronsideFarrar
Opportunity and Mitigation
New housing needs to be developed in a manner sensitive to the settlement patterns of the island and seek to
support local access to housing for young people from the island taking up employment in O&M. A number of
housing scenarios could be envisaged including:
Growth of a single Township e.g.
- Settlement extension providing up to 11 new homes
Extension to a number of Townships across the island e.g.
- Assuming 6 townships equates to 1-2 houses per township
Dispersed housing e.g.
- New housing throughout the island on Brownfield land wherever possible
Housing is an important local issue around which the community is seeking assurance about quality and urban
design. Opportunity exists for housing refurbishment alongside contemporary new build in a manner that builds on
community infrastructure and supports demand for goods, services & indirect jobs.
Infrastructure - Harbour / Airport / Roads
Harbour
The O&M operations will be operated by 2 motherships providing the service support and personnel access to the
turbines in combination with a helicopter. A harbour facility created by a breakwater and offering quay access will
be required.
Harbour Breakwater
- Offering berthing for mothership(s) all year round
Pontoon and Quay facilities
- 140m of alongside space- quay wall or breakwater
- Marine fuel bunkering serviced and refuelled by sea-barge. It is not anticipated that workboat fuelling
would require fuel import by ferry. Aviation fuel bunkering is to be confirmed by SPR.
Airport/Heliport
The O&M operation could be supported by a helicopter base either at the harbour or at the airport. Helicopter
provision would include a hangar, helipad and fuel bunkering. Flight levels are currently under assessment but
worst case numbers suggest 1-5 return flights per day. O&M operators would be expected to maximise the use of
fixed wing aircraft over that of helicopters for mainland trips
Local Roads
The O&M operation may require some local Road Network upgrading but only in the immediate local area of the
O&M Base or between the base and the harbour. Access to the harbour / breakwater will be required for vehicles.
If helipad facilities were located at the airport volumes of resultant road traffic are considered unlikely to be
significant.
47 Tiree Onshore Scenario Mapping Study
Section 5 Assessment Scenario 4
Opportunity and Mitigation
Infrastructure clearly needs to match any intensification of use whether this be associated with harbour/airport or
roads. Local road upgrades may offer wider benefits as would development of the harbour. Issues requiring to be
addressed would include:
Harbour feasibility study should be advanced as this represents a key element of Scenario 4 support
infrastructure:
- Scenario 4 is predicated on a Harbour upgrade
- Harbour at Gott Bay would involve 3+ year lead time & c. £15 million + investment
- Harbour planning needed in advance of Array commitment
- O&M facility has strong dependencies with Ferry Terminal & Transport Infrastructure
- O&M operations will utilise airport capacity in preference to extended helicopter flights
Harbour improvements may offer wider support to existing local businesses e.g.
- Creating access for fishing / recreational boats and improving ferry weather protection & berthing
Helicopter flights paths across defined sea routes could mitigate island over-flying.
Need to protect existing air and sea capacity via dialogue with key bodies including CMAL and Argyll and
Bute Council.
Community Infrastructure
Education
The school roll currently stands at 94 (10 at pre-school, 44 primary and 40 secondary). Higher and further
Education is provided on the mainland. Scenario 4 O&M operations would increase the resident population and
increase the school roll. Based on a multiplier of 0.27 primary pupils per household (with families) and 0.2
secondary pupils per household (with families) the additional educational needs would include up to 4 Primary
Pupil places and up to 3 High School places.
Health
O&M operations would potentially add 56 to an existing resident population of around 730. On the basis of new
resident assumptions this could create additional demand on healthcare and community infrastructure. Health
provision is responsive to demand/population with a particular need however to address community care.
Lifeline Services – Air and Ferry connections
Scenario 4 O&M operations by increasing island population will place additional demand on air and ferry
connections. A 7% increase in population will require a review of current air and ferry capacity. Vehicular ferry
capacity at weekends & in the summer months is near or at capacity. Reducing ferry cancellations and any
improvement to capacity would offer local benefits.
Opportunity and Mitigation
A growing population would introduce both opportunity and impacts with mitigation dependent on investment in
local capacity. Discussions are being progressed with a number of key service providers to identify any specific
measures or responses.
Discussions with CMAL / Calmac and HIAL regarding Lifeline services and need for forward planning to
accommodate increased demand for these services
Harbour feasibility study should be advanced
Discussion with Argyll and Bute Council and relevant health providers to ensure that future demand for
services can be accommodated.
48 IronsideFarrar
49 Tiree Onshore Scenario Mapping Study
Section 6 Analysis
6.1 Objective Led Analysis
Whilst Section 6 to follow provides an appraisal of the 4 Scenarios based on employment led factors i.e.
numbers of new jobs based on Tiree and therefore requirement for homes, infrastructure etc, an objective
led analysis can provide an initial review of potential implications against a wider range of topic areas.
One way to determine potential impacts (both positive and negative) relative to an existing resource at a
strategic level (e.g. in terms of impact on agricultural land, employment, etc) is to use an objective-led
assessment to ‘test’ the strategic action or proposal and thereby predict its impacts and any mitigation
required.
6.2 Development of Objectives
The objectives have been derived from:
Guidance on objective led assessment including Strategic Environmental Assessment (SEA) and
Scottish Transport Appraisal Guidance (STAG)
Review of the topics within Tiree Forum Brochure ‘Tiree Today and for the Future’
Objective-setting with Steering Group
Consultation with the community during Consultation Events 1, 2 and 3.
6.3 Identifying Opportunity and Requirement for Mitigation
Given that the Operations and Maintenance (O&M) will not be decided until 2018 at the earliest, there is a
need to review the key areas of mitigation and/or where benefits/opportunity needs to be captured through
a variety of mechanisms:
Detailed recommendations for capturing opportunity or mitigation are provided within the detailed Scenario
Assessments in Section 6.
Mitigation
Required and addressed through:
Sensitive design in line with A&BC Sustainable Design Policy and Guidance
and addressing mitigation in accordance with Planning Advice Note 58
Planning
Required and addressed through:
Any potential new housing and associated infrastructure may be dealt with
through consideration of development plan policy.
Service Demand
Required and addressed through:
Services would be required to respond in relation to any increases in population
and will require forward planning and co-ordinated service delivery including
building community capacity, skills development and training.
Infrastructure
Required and addressed through:
Provision of New Harbour/Breakwater that should seek to capture wider
benefits to the island and support sustainable economic activity.
Objective Led Analysis
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6.3 Summary of Objective Led Analysis
The use of objectives provide a systematic, rigorous, and consistent framework with which to assess
potential impacts - the assessment asks whether each of the potential O&M Scenarios either supports the
objective or works against it. The table below provides a summary of this analysis and how potential
impacts require to be addressed for each of the Scenarios should these be advanced by the future O&M
operator.
Objectives
Initial review of potential implications of each Scenario against objectives
Scenario 1
Scenario 2
Scenario 3
Scenario 4
Agriculture To seek to maintain current land management practice and capacity including access to markets and sustaining agricultural / crofting employment
Mitigation Infrastructure
- - Mitigation
Infrastructure
Fishing To seek to maintain the fishing industry at current levels and/or support modest sustainable growth through improvements to infrastructure and secondary support for fishing incomes.
Infrastructure - - Infrastructure
Design & Construction To seek to ensure place quality is enhanced, derelict and vacant land and buildings are utilised, sustainable design principles and local bespoke design guidance is adopted.
Mitigation - - Mitigation
Education To seek to ensure any additional population growth associated with O&M supports educational provision on the island.
Service Demand
- Service Demand
Service Demand
Employment To seek to increase local employment opportunities that support skills and training and opportunities for young people whilst growing the locally employed population base and non-seasonal job opportunities.
Infrastructure Service Demand
Infrastructure Service Demand
Infrastructure Service Demand
Infrastructure Service Demand
Heritage To seek to protect social, environmental and cultural heritage recognising a risk associated with de-population that impacts on a vibrant island cultural life.
Mitigation - - Mitigation
Nature Conservation To seek to respect nature conservation designations and ensure any future planning and design take full account of environmental/ impacts and conservation of natural systems.
Mitigation - - Mitigation
51 Tiree Onshore Scenario Mapping Study
Section 6 Analysis
Objectives
Initial review of potential implications of each Scenario against objectives
Scenario 1
Scenario 2
Scenario 3
Scenario 4
Housing To seek to ensure any additional population growth associated with O&M provides housing complementary to the existing settlement structure and its distinctive place qualities.
Mitigation Planning
Infrastructure - -
Mitigation Planning
Infrastructure
Noise To seek to ensure that the noise environment is addressed with specific reference to helicopter access and servicing.
Mitigation Mitigation Mitigation Mitigation
Tourism To seek to maintain the ‘special qualities of place’ that support the tourism sector recognising the importance of sports / leisure / recreation and cultural heritage to the tourism economy.
Mitigation Planning
Infrastructure - -
Mitigation Planning
Infrastructure
Transport To seek to maintain and enhance transportation access within the modes of air, sea and road with appropriate improvements to infrastructure or service levels that recognise the needs of all sectors.
Mitigation Service Demand
Infrastructure
- -
Mitigation Service Demand
Infrastructure
Visual Change To seek to ensure that the visual environment is addressed with specific reference to place quality, buildings and design.
Mitigation - - Mitigation
Health To seek to maintain access to health facilities and ensure provision addresses future health needs
Service Demand
Service Demand
Service Demand
Service Demand
Way of Life To seek to maintain a special ‘way of life’ that offers a diversity of community interests, opportunity for enterprise, for relaxation and amenity that support civic community capacity and health and avoids the loss of the things that make Tiree a special place to live, work and visit.
Mitigation Planning Service Demand
Infrastructure
-
Mitigation Planning Service Demand
Infrastructure
Mitigation Planning Service Demand
Infrastructure
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53 Tiree Onshore Scenario Mapping Study
Section 7 Mitigation and Monitoring
7.1 Developing Mitigation and Monitoring Measures
This study has highlighted a range of measures/approaches that would address impacts and capture
benefits arising from each of the potential O&M Scenarios should these (or variations thereof) be taken
forward to more detailed planning stages.
Measures are per the following examples:
Mitigation – Sensitive design in line with A&BC Sustainable Design Policy and Guidance
Planning – Appropriate planning for new housing and associated infrastructure
Service Demand – Services would be required to respond in relation to any increases in population
Infrastructure – New Harbour/Breakwater may be required and should seek to capture wider
benefits to the island
7.2 Structuring Community Benefits
Consultation and the study assessment suggests Community Benefits could be anticipated to be an
important part of the mitigation strategy and the provision of indirect assurances to the community. There
is a need to address a structure and mechanism for funding and associated applications.
SPR has been progressing the aspects of Community Benefits and we understand dialogue is ongoing.
The company has advised its commitment to the principle of creating a Community Partnership Fund, a
mechanism that would provide direct investment in Tiree and for the people who live on the island and
could support local projects and initiatives.
The development of a Community Partnership Fund would be based on a number of factors, including:
Creation and administration of any fund would involve a number of organizations
The investment would be intended to support Tiree economically and socially
The investment would be additional to any sums paid by SPR to individuals or businesses in Tiree
under private contracts or agreements related to the development and operation of an array
The investment would also be separate to any improvements to Tiree infrastructure essential for the
development of an array, such as harbour or infrastructure works
7.3 Building Community Capacity, Skills Development & Training
A critical requirement in delivering benefits to the Argyll & Bute economy and to local communities is the development of community capacity and specifically advance programmes associated with skills development and training. The issue of skills requirements and development is currently being considered as part of the Argyll and Bute Renewable Energy Action Plan (REAP). ScottishPower Renewables (SPR), in discussion with the Tiree Community Development Trust (TCDT), have agreed the establishment of the Tiree Renewable Energy Skills, Education and Training (RESET) Fund. This fund will be used to provide financial support to eligible candidates pursuing post-school education or training, as defined in the Tiree RESET Fund Rules 2012-13 up to a total of £10,000 for 2012/13.
Mitigation and Monitoring
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7.4 Consenting Requirements
The procedure for gaining planning permission for offshore renewables has changed since the enactment
of the Marine (Scotland) Act 2010 and the UK Marine and Coastal Access Act 2009. The recent shift in
focus towards the offshore energy potential around the Scottish Coastline has led to the requirement for up
to date and concise marine guidance. ScottishPower Renewables (SPR) require the following licenses and
consents in order to construct and operate the proposed Argyll Array:
Offshore – from Scottish Ministers
A Marine Licence under Section 16 of the Marine (Scotland) Act 2010,
Consent under Section 36 of the Electricity Act 1989 from the Marine Scotland’s Licensing
Operations Team for the construction and operation of an offshore windfarm.
SPR will also be required to submit an Environmental Statement under the Electricity Works
(Environmental Impact Assessment) Regulations 2000. The Environmental Statement should
include all potential effects the proposal may have on protected sites, in particular sites designated
under EU and UK legislation including the Conservation (Natural Habitats) Regulations 1994 and
the RAMSAR Convention of Wetlands of International Importance (1971).
A ‘decommissioning plan’ will also be required under the Energy Act 2004
Onshore – from Argyll and Bute Council
Planning permission under the Town and Country Planning (Scotland) Act 1997 and as amended
by the 2006 Town and Country Planning (Scotland) Act 1997 with regard to onshore infrastructure.
Depending on the nature and scale of onshore built development, an EIA under The Town and
Country Planning (Environmental Impact Assessment) (Scotland) Regulations 2011 may be
required in addition to a Habitats Regulation Assessment under the Conservation (Natural Habitats)
Regulations 1994.
Any harbour works (on land owned by CMAL, including the harbour at Gott Bay) would be subject
to a Harbour Revision Order (1964 Harbours Act) and would therefore be subject to a ministerial
decision.
The Blue Sea Green Energy – Sectoral Marine Plan for Offshore Wind Energy in Scottish Territorial
Waters (2011) highlights the importance of effective engagement with communities at local level, an
example of which is undertaking a scenario / masterplanning approach as a way of informing future
decisions with regard to onshore aspects of a proposal and positive engagement with communities in order
to discuss options. This study has been progressed based on these principles with community
consultation at the heart of the process.
55 Tiree Onshore Scenario Mapping Study
Section 7 Mitigation and Monitoring
7.5 Licence Conditions / Planning Conditions & S75 Agreements
Offshore
There will be Licence Conditions (Marine Licence under Section 16 of the Marine (Scotland) Act 2010) and
Planning Conditions (Section 36 of the Electricity Act 1989) attached to the Licence and Consent for the
proposed offshore array, if granted.
National Planning Policy Guideline NPPG1 - the Planning System (paragraph 49) sets out six tests for
conditions:
necessary
relevant to planning
relevant to the development to be permitted
enforceable
precise
reasonable in all other respects
Onshore
Argyll and Bute Council as the planning authority will determine any land based planning applications for
on-shore development associated with the proposed offshore array. Planning conditions to protect the
environment and public amenity will be applied to consents as required along with any Section 75
agreements.
7.6 Future Change / Project Uncertainties
Emerging Technologies and Operations and Maintenance (O&M)
The Operations and Maintenance industry associated with offshore wind turbine arrays is a relatively
young and developing industry with no fixed model yet developed on how the activity should be
undertaken.
Established arrays have differing O & M requirements depending on a range of topics including:
Distance to the array
Sea conditions
Turbine warranty status
Operator preferences
Manufacturer preferences
Reliability of offshore turbines remains an issue for manufacturers and operators and the industry is intent
on improving reliability through changing and evolving technologies. Turbine failures generally relate to
gearbox, electrical and related issues. The cost of a turbine being inactive is such that the operators are
seeking continual improvements to increase reliability and reduce turbine down time. 24/7 and quick
access to the turbine fields is essential to the O&M operator. Emerging technology changes such as
gearbox improvements or replacement with direct drive turbines will serve to reduce maintenance burdens
over time.
56 IronsideFarrar
Marine Planning
The Marine (Scotland) Act 2010 and the UK Marine and Coastal Access Act 2009 include new powers and
duties to designate Marine Protected Areas (MPAs) as part of a range of measures to manage and protect
our seas for current and future generations. SNH and JNCC are currently reviewing potential MPAs and
will be reporting to the Scottish Parliament by the end of 2012 - any future MPA designation in the waters
around Tiree will be an important consideration for both the proposed Array and O&M requirements.
The proposed array is also within an area of search for an SPA (for wintering Great Northern Divers) with
further detail on short-listing of marine Special Protection Areas (SPAs) from Scottish Government
expected by December 2012.
The Scottish Government is currently developing Plans for Offshore Wind, Wave and Tidal Energy in
Scottish Waters. These Plans (Draft Interim Plans and Draft Regional Locational Guidance) will explore
how offshore wind, wave and tidal energy can contribute to meeting Scotland’s target of generating the
equivalent of 100% of electricity demand from renewable sources and also seek to maximise the
contribution of these technologies to achieving a low carbon economy. Marine Scotland commenced
Public Participation on these plans in September 2012.
Challenging Environments
The marine environment is particularly challenging for construction, fixed structures as well as O & M
activities and the Argyll Array will bring its own particular challenges given the known extremes of weather
and sea state experienced in the area.
Offshore O&M often means working in challenging environments:
Wave heights and swell and frequency of storms
Increased maintenance of turbines in harsh environments
Challenges of remote working and HSE requirements
The Scenarios are being developed in parallel with detailed marine and climatic surveys to allow the
Operations and Maintenance (O&M) needs for the proposed array to reflect the sea conditions of the
waters around Tiree. Significant wave heights and windspeeds during the winter months need to be
addressed in developing the O&M solutions and options. Discussions are ongoing with operators and
manufacturers to match operational specifications with these conditions. The scenarios give an impression
of the scale of activities, types of impacts and benefits and allow early consideration of how opportunities
may be secured and mitigation addressed. New innovations can be anticipated to influence future O&M
activity and impacts upon the levels and provision of:
Mothership / Workboat size, crews, support, maintenance
Helicopter type, size, crews, support, maintenance
Technical support staff requirements and shift patterns
Corresponding facilities requirement (size of onshore base, mothership(s), platform)
57 Tiree Onshore Scenario Mapping Study
Section 7 Mitigation and Monitoring
O&M Procurement and Warranties
The O&M Procurement Process will influence the exact nature of the way that O&M is implemented. It will
be informed by:
The O&M provision should the proposed array go ahead will be tendered and therefore will be open
to variation based on appointed O&M operators approach to the proposed development
The initial O&M provision for the Array (anticipated to be a 5 year period) will be delivered by the
turbine manufacturer and their own O&M team. As the warranty period comes to an end the O&M
services would be re-tendered.
New technology as it becomes available will influence O&M e.g. more reliable turbine components
fitted, workboats able to work in poor weather conditions, increased telemetry etc
Changes in response to HSE requirements and offshore working practices
Different operators will bring different experience and innovation to the O&M activity with SPR and/or
turbine suppliers specifying the standards and any pre-requisites for operations. This study process is
seeking to help understand future requirements for O&M some time in advance of firm decisions being
able to be reached.
SPR are looking to lodge applications for permission to construct the windfarm in 2014 with an ambition to
move to construction and operation in 2020 onward. Innovation in technology and new experience from
existing sites will impact on O&M procurement and detail.
O&M Vessel Design Challenges and Technologies
Vessels associated with O&M activities range from workboats (anticipated at 28 metre length) to large
scale mothership vessels. The mothership concept provides for all O & M related activity including ship to
turbine transfer, staff accommodation and welfare facilities, supplies, consumables, helicopter transfer and
workboat docking/launch.
Such a vessel could be based at a mainland port such as Oban, Campbeltown or Ullapool or could be
based on Tiree, subject to adequate harbour provision.
An upgraded harbour on Tiree would require to provide breakwater(s) and berthing designed to counteract
both sea swell and wind conditions as well as provide an adequate draft and thus offering an appropriate
standard for array vessels. Harbour works (on land owned by CMAL, including the harbour at Gott
Bay) would be subject to a Harbour Revision Order (1964 Harbours Act) and supported by the relevant
environmental and technical studies would therefore be subject to determination by Scottish Ministers
Array Construction
Construction of an array falls outwith the remit of this study and the following comments and observations
are made in relation to onshore implications. Turbine assembly, construction and erection will be by large
specialist vessels, typically jack up barge style vessels. These vessels are of a scale that would not lend
themselves able to utilise Tiree as a base and are likely to be based at a turbine assembly yard such as
Harland and Wolffe in Belfast. Once on the array site, these vessels remain there until the turbines are
erected prior to returning to the assembly base. Interaction with Tiree is anticipated to be very limited
during the construction of the offshore elements however a level of supplies/stores could feasibly be
located on the island.
58 IronsideFarrar
Convertor Station
The proposed offshore Array will include a requirement for a Converter Station. Whilst not part of the brief
for this study, we are aware that there have been discussions about the need, location and size of a
Converter Station either onshore on Tiree or offshore.
The converter station will form part of the associated development of the windfarm. This means the
electrical infrastructure required for the windfarm – including export cabling (to take electricity to the
national grid), substations and converter stations. Cabling would be underground and not on overhead
lines.
A decision has not yet been taken on whether to propose that the converter station be offshore or onshore.
If onshore, a building of dimensions 100 x 50 and up to 25 metres high together with associated facilities
may be proposed (SPR Scoping Document, 2010).
An onshore convertor station would measure approximately 100m x 50m x 25m high. The height of the
station is determined by the electrical components within the building, and it is expected that only a short
section of the station would be at height of 25m, with the rest at a lower level.
The convertor station has the potential to be a significant issue for the island with significant implications
associated with its location / design, construction and construction access (e.g. road upgrade). Detailed
assessment of the potential on and offshore locations and the construction approach need to be
addressed as early priorities within the development of the array. The final decision on the convertor
station will be informed by ongoing technical studies.
SPR have advised of the intent to hold a Public Information Days in October 2012 with further info on the
convertor station and updates on EIA.
The Local Development Plan (LDP) currently being drafted by Argyll and Bute Council to replace the
existing Local Plan (2009) and Argyll and Bute Structure Plan (2002) will need to look at potential locations
for the convertor station should this be anticipated to be onshore on Tiree. If the Convertor Station was to
be located on Tiree, planning permission would be required and may include need for Environmental
Impact Assessment / Habitats Regulation Assessment to address landscape and visual sensitivities,
designated sites etc.
59 Tiree Onshore Scenario Mapping Study
Section 7 Mitigation and Monitoring
Helicopter Access and Flight Corridors
The proposed offshore array will include a requirement for helicopter support on the island of Tiree.
Each of the development scenarios will have different helicopter service needs but the level of use has the
potential to create significant, (real and perceived) impacts on people, property and island qualities.
The issues, requirements, specification and operational management of helicopter facilities needs to be
addressed and developed e.g. Whisper Helicopters / Flight Paths / Operating Times / Emergency
Procedures, fuel bunkering locations and re-fuelling etc.
60 IronsideFarrar
61 Tiree Onshore Scenario Mapping Study
Section 8 Future Steps
Future Steps
Future Steps (O&M)
Ironside Farrar have advanced the Tiree Scenario Mapping Study in close consultation with the client partners,
steering group and the local community and other stakeholders. The project is at an early development stage
and it will be critically important to ensure partner, community and stakeholder interest continue to be
coordinated and active engagement maintained with local communities.
Discussions within the Steering Group have indicated the intent for Argyll and Bute Renewable Alliance (ABRA)
to take a more active role in supporting the co-ordination of next steps between the stakeholders.
The scenario mapping study has been undertaken to inform stakeholders and the community around the
potential options for Operations and Maintenance (O&M) of the Argyll Array. Further development work will be
required by SPR in consultation with Marine Scotland, The Crown Estate and Argyll and Bute Council.
Elements of development and feasibility will be progressed by ScottishPower Renewables closely linked to the
Licensing and Consent programme and development of the Argyll and Bute Local Development Plan. Important
next steps in this regard will include:
Array / Operational Baseline Studies
Need to establish environmental /wave /construction & operational parameters effecting marine servicing
as part of Scheme Development. Procurement arrangements and manufacturer /operational
requirements
Converter Station Design & Locational Assessment
Converter Station decisions are important to impact and mitigation. We understand that detailed
assessment will be through the EIA for the proposed Array. Further detail in relation to a convertor station
and its location options is anticipated in October 2012.
Licence / Planning Procurement Programme
Need to ensure programme convergence on key consent and delivery issues
Local Development Plan (LDP)
Development Framework / Masterplan to maintain continuing consultation and potentially to help inform
the LDP.
62 IronsideFarrar
Future Steps & Engagement
In addition to the elements noted above, a number of additional studies and actions need to be advanced and
coordinated with stakeholders and communities if benefits are to be secured from the proposed Argyll Array and
O&M arrangements. These will include:
Engagement & Communications
Maintaining engagement activity e.g. through Argyll & Bute Renewable Energy Alliance (ABRA)
Harbour Feasibility Study
Harbour requirement for Scenario 1&4 and would require early study and delivery
Advance Skills and Training Programme
Advance Initiative required linking Skills /Training with future need with 3-4 year lead time with all key
partners
Community Benefit Review
Need to continue a dialogue on opportunity and issues associated with Community Benefits / Community
Partnership Fund
Health Impact Assessment
Ensure potential impacts and service demand are reviewed in advance with key partners
Maintaining engagement with communities and stakeholders will be critical if these groups are to continue to be
involved in the development planning process. A high level innovative form of engagement has been advanced
as part of the Scenario Mapping. Stakeholder and communities will seek to continue to be informed in both the
Licence and Planning consent procedures but as importantly, in areas associated with agreements for
Community Benefits, harbour development and future project planning for the servicing of the Array and all land
based implications.
A significant part of the local community is undecided as to the balance of benefits and impacts, opportunities
and threats associated with the proposed array. Quality of engagement and ensuring all parties (supporter and
opponents) are well informed is considered to be of increasing importance as the project detail develops and
emerges.
63 Tiree Onshore Scenario Mapping Study
Section 8 Future Steps
Ironside Farrar recommend that the ‘Future Steps’ includes the following key areas.
These recommendations have been informed by community consultation progressed
to date.
Future Steps (Addressing O&M)
Operational Baseline (Array) Studies
Need to establish environmental /wave /construction & operational parameters
affecting marine servicing. We understand that detailed assessment will be via EIA
and engineering design for the proposed array.
Converter Station Design & Locational Assessment
Converter Station decisions are important with respect to potential impacts and
mitigation. We understand that detailed assessment will be progressed via EIA for the
proposed Array.
Licence / Planning Procurement Programme
Need to seek programme convergence on key consents and delivery
Local Development Plan (LDP)
Development Framework / Masterplan to maintain continuing consultation and
potentially to help inform the LDP. Scenario mapping has the potential to help inform
the LDP as the scenarios and details continue to develop.
Future Steps (Addressing Engagement)
Maintaining Local Engagement
Ensuring Local Communities and Stakeholders continue to be involved and are kept
up to date with the planning and O&M process
Harbour Feasibility Study
Detailed study outcomes will impact on viability of Scenario 1&4 and would require
early study and delivery
Advance Skills and Training Programme
Advance Initiatives required linking Skills /Training with future need with c. 3-4 year
lead time.
Community Benefit Review
Need to continue a dialogue on opportunity and issues associated with Community
Benefits / Community Partnership Fund.
Health Impact Assessment
Ensure potential impacts and service demand are reviewed in advance with key
partners
Summary